So, I have an idea for a game that involves a lot of environments and backgrounds. Unfortunately since I don't have an artist this time, and don't have a drawing tablet or any screen to draw on larger than my phone, making backgrounds digitally is very difficult for me. So I tried my hand at Kritashopping and bashing many stock photos together to see if I could make something that looks half-decent:

I was going for a kitsch, collage, cottagecore kind of vibe and I think I got it, it's VERY corny JKDSJKDAS. Also kinda looks like a Mr Beast thumbnail but oh well. I'm still not sure if this is what I'm going to stick with for the final game, but it's definitely efficient. The source images are all from Unsplash, so I have the rights to use them, it took me about 1 hour to complete, and in case I don't have time, I can just use the paper sketches as graphics, which take just 5 minutes max to make.
Actually my original plan was just to take a picture of the paper sketch and color it digitally, but I found that to be too difficult.
If anyone has any opinions on the style or their own techniques for making graphics efficiently, I'd love to hear them!